Lubricating device



Jan. 9, 1923.

D. F. FESLER. LUBRICATING DEVICE. ORIGINAL FILED Nov. 18, 1918 ,Patented dem, 1923.

DOUGLAS FFESLER, OF- CHICAGO, ILLINOIS, ASSIGNOR TO THE BASSICK MANUFAC; TUBING COMPANX, A CORPORATION OF DELAWARE.

LUBRICATING DEVICE.'

Original application led November 18, 1918, Serial No. 262,930, now Patent No. 1,387,848, dated August 1 6, 1921. Divided and this application led May 28,I 1920. Serial No. 384,929.

To all whom 'it may comem Be it known that I, DOUGLAS F. FEsLnR, a' citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Lubricating Devices, of which `the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a art of this specification. 1

y invention 'relates to improvements in a lubricating device, and is especiallyconcerned with means for supplying lubricant underpressure to bearings or other surfaces to be lubricated. My invention comprises means whereby lubricant under highpres? sure can be initially supplied to the surfacesto be lubricated and other-means for thereafter supplyingv lubricantI to said surfaces at a considerably reduced pressure.

The objects of my invention are: 1st. To provide apparatus for perform-- ing the above functions, comprising in general a grease cup having a plunger therein, a spring confined between one end of the grease cup and the plunger, means for supplying lubricant underpressure to the space between the other side of the plunger and the opposite end of the grease cup, and means for conducting lubricant from said space to the bearing orsurface to be lubricated, the means for supplying lubricant to said space under pressure comprising a grease gun or compressor, such as that disclosed in my copending application, Serial No. 262,930, filed November 18, 1918 of which this application. constitutes a division, and which comprises a discharge nozzle and means for detachably connecting the discharge nozzle of the grease gun with the grease cup.

2nd. To provide a system of the character described in which means is provided for supporting the plunger against the pressure of the lubricant when the grease cup is completely filled bv lubricant under pressure, so that additional pressure can be exerted upon the lubricantin order to force it into the bearing with which the grease cup is connected under an extremely high pressure,

described having means for indicating theamount of lubricant which it contains. Other objects will appear as this description progresses, reference being had to the accompanying drawings in which' Figure 1 is a side elevation of a grease cup embpdying my invention, and

Figure 2 is a 'central longitudinal section i therethrough.

Referring tof the drawings, the reference character 5 indicates, as a whole, a cylindrical lubricant receptacle having the end closure 6 integrally formed therewith and the end closure 7 detachablysecured thereto. The end closure 7 is provided with a screwthreaded tubular extension 8 by means of which the device can be secured to a bearingV ,to be lub-ricated.

A tubular member 9 extends through the end closure 6 and is formed integrally therewith. The inner end of the tubular member 9 extends inwardly from the end closure 6 to a point adjacent the inner side of the end closure 7 there being suiiicient space left lie-- twee-n these two members 'to permit the-passage of lubricant therebetween without eX- cessiveresistance. The outer end of the tubular member is flanged over, as shown at" 10 and provided with the ball `closure 11 which is held in its closed position b means of a spr-ing 12, one 'end of'whic abuts against the closure 11 andthe other end of which rests upon the pin'13 which` extends through and :from both sides of the outer end of the tubular 'member 9.

A cup leather 14 is slidably mounted upon the inner end ofthe tubular extension 9 and is provided with flanges 15 and 16 for maintainin sealing contacts with the cylindrical wa ls of the lubricant receptacle and the outside of the tubular member 9, respec tively.

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Reference character 17 indicaties a back plate or follower resting upon the'cup leather 14. The plunger thus described is urged toward the 'end closure 7 by means of 'trated in the patent to Arthur V. Gullborg',

No. 1,307,734 of 'J une 24, 1919, or that shown in my co-pending application, Serial No.y 262,980, filed November 18, 1918, of which this application constitutes a continuation, is connected with-the outer end of the tubular member 9 and actuated to exert pressure on the lubricant contained therein. The lubricant isthereupon forced past the closure |11 which is opened by the pressure of the lubricant through the tubular member 9 and the tubular extension 8 to the bearing. Ordinarily, the resistance of the bearing will be sufficient to cause the lubricant to then back up, in the receptacle 5, lifting the spring-pressed plunger until the-convolutionsv of the spring 18 are all brought into contact with the inner side of the end closure 6, whereupon the movement of the plunger is arrested. Y If. the pressure uponthe lubricant in the compressor is then increased, the lubricant will be forced between the bearing surfaces dislodging and forcing out the used lubricant and replacing it with new. When sufiicient lubricant has been supplied to the bearing, the compressor is detached from the outer end`of the tubular member 9. Thereafter the Spring 18 will exert a constant pressure upon the plunger which will beconsiderably less than that exerted by the compressor but sufiicient to'maintain a small but constant supply of lubricant to the bearing.

While 1 have described the details of the preferred embodiment of ma invention, it 1s to be clearly understood t at my invention is not limited to these details, but is capable of other adaptations and modificationswithin the spirit and scope of the ap-` pended claims.

Having thus described my invention, what I claim is w 1. A lubricating device comprising a lubricant receptacle having end members, one of which is provided with a screw-threaded tubular extension for securing said device to a part to be lubricated, a tubular member extending through the other end member and formed integraily therewith, the inner Marsala end of'said tubular member extending to a point adjacent the first-named end member, the outer end of sa'id tubular member being provided with anoutwardly closing closure and means for making a detachable connection with the discharge conduit of a lubricant compressor, a plunger in said lubricant receptable slidably mounted on said tubularmember, and means in'said lubricant receptacle forl yieldably urging said plunger against the lubricant in said receptacle.

` 2. A lubricating'device comprising a lubricant receptacle having end members, one of which is provided with a tubular extension for securing said device to a part to be lubricated, 'a tubular member extending through the Yother end member, the inner end of said tubular member extending to a point adjacent the first-named member, the outer end of said tubular member being provided with an outwardly closing closure and means for making a detachable connection with the discharge conduit of a lubricant compressor, a plunger in said lubricant receptacle slidably mounted on said tubular member,l and means in said lubricant receptacle for urging said plunger against the lubricant in said receptacle.

3; A lubricating device comprising a lubricant receptacle having end members, one of which is provided with a tubular extension for securing said device toa part to be lubricated, a tubular member extending through the other end member, the inner end of said tubular member extending to a point adjacent the first-named end memberthe outer end of saidA tubular member being provided with means for making a detachable connection with the discharge conduit of a lubricant compressor, a plunger slidably mounted on said tubular member, and means in said lubricant receptacle for urging said plunger against the lubricant in said receptacle.

fl. A lubricating device comprising a lubricant receptacle having a pair of end members, means for establishing communication between said lubricant receptacle and a bearing, a tube extending inwardly from onefof said end members, means for connecting the discharge conduit of a lubricant compressor with the outer end of said tube, a plunger in said receptacle slidably mounted on said tube and means for maintaining said plunger in contact with the lubricant in said lubricant receptacle.

5. A lubricating device comprising a lubricant receptacle having a pair of end members, means for establishing communication between said lubricant receptacle and a bearing, a tube extending inwardly from one of said end members, means for connecting the discharge conduit of a lubricant compressor with. the outer end of said tub,e,a plunger in said receptacle, andv means .from said receptacle and means for conduct- 10 for maintaining said plunger in contact with lng lubricant vfrom said receptacle to a bearthe lubricant 1n said lubricant receptacle. ing.

6. The combination with a receptacle hav- In Witness whereof, I hereunto subscribe ing a tube extending inwardly from one myl name this 21st day of May, 1920.

Wall thereof, of means for connecting the l DOUGLAS F. FESLER. discharge conduit of a lubricant compressor Witnesses:l with the outer end of said tube, means ALBIN CAHLBERG,

mountedon said tube for expelling lubricant ANDREW WINTERCORN. 

